body {
  max-width: 750px;
  min-width: 320px;
  width: 10rem;
  margin: 0 auto;
  line-height: 1.5;
  font-family: Arial, Helvetica, STHeiTi, sans-serif;
  background: #f2f2f2;
  -webkit-touch-callout: none;
  -webkit-tap-highlight-color: transparent;
  height: 999.999975px;
}
a {
  text-decoration: none;
}
@media screen and (min-width: 750px) {
  html {
    font-size: 75px!important;
  }
}
.search-content {
  display: flex;
  align-items: center;
  position: fixed;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 10rem;
  height: 1.173333rem;
  background: url(../images/bg.png) no-repeat;
}
.search-content .classify,
.search-content .login {
  width: 0.48rem;
  height: 1.04rem;
  padding: 0.146667rem 0.333333rem 0 0.32rem;
}
.search-content .classify img,
.search-content .login img {
  width: 100%;
}
.search-content .search {
  flex: 1;
  position: relative;
  height: 0.853333rem;
}
.search-content .search form {
  height: 0.853333rem;
}
.search-content .search form input {
  border: 0;
  outline: none;
  width: 100%;
  height: 0.853333rem;
  border-radius: 0.426667rem;
  padding-left: 0.933333rem;
  padding-right: 0.306667rem;
  font-size: 0.346667rem;
}
.search-content .search form input::placeholder {
  color: #757575;
}
.search-content .search .search-icon {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  left: 0.266667rem;
  width: 0.48rem;
  height: 0.48rem;
  background: url(../images/search.png);
  background-size: 0.48rem;
}
.search-content .login {
  background: url(../images/login.png) no-repeat center;
  background-size: 0.48rem 0.8rem;
}
.banner a img {
  width: 100%;
  vertical-align: middle;
}
.ad {
  display: flex;
}
.ad a {
  flex: 1;
}
.ad a img {
  width: 100%;
  vertical-align: middle;
}
.nav {
  display: flex;
  flex-wrap: wrap;
}
.nav .nav-items {
  flex: 20%;
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-top: 0.133333rem;
}
.nav .nav-items img {
  width: 1.12rem;
  height: 1.12rem;
}
.nav .nav-items span {
  margin-top: 0.093333rem;
  color: #666;
  font-size: 0.293333rem;
}
.nav2 a {
  float: left;
  width: 2rem;
  height: 1.866667rem;
  text-align: center;
}
.nav2 a img {
  display: block;
  margin: 0.066667rem auto 0;
  width: 1.12rem;
  height: 1.12rem;
}
.nav2 a span {
  display: block;
  margin-top: 0.093333rem;
  color: #666;
  font-size: 0.293333rem;
}
